CN106974775A - Absorbing structure for absorbent article - Google Patents

Abstract

The invention provides the absorbing structure for absorbent article (13), it includes the absorbed layer (17) with the absorbing material (50) comprising superabsorbent polymer particles supported by support sheet (16), and with generally longitudinally passage (26), and including one or more adhesive materials with the fixed absorbing material (50) of first and second without the superabsorbent polymer particles.These passages can provide improved stickiness and/or liquid acquisition/transfer capability, and/or improved performance.

Description

Absorbing structure for absorbent article

The application is to be based on the applying date on June 8th, 2012, and priority date is on June 10th, 2011, Application No. (201280028278.9 PCT/US2012/041492), entitled：The patent Shen of " absorbing structure for being used for absorbent article " Divisional application please.

Technical field

The present invention relates to a kind of absorbing structure for absorbent article such as diaper, it includes the tool supported by support sheet There is the absorbed layer of the absorbing material comprising superabsorbent polymer particles, and with without the superabsorbent polymer particles The first and second passages generally longitudinally, and including one or more adhesive materials so that the absorbing material to be fixed Onto the support sheet.Passage can be to be permanent, i.e. their integrality equal at least portion under drying regime and wetting state Point be kept, and provide during the whole use of absorbing structure improved stickiness and/or liquid acquisition/transmission energy Power, and/or improved performance.

Background technology

Disposable absorbent article for accommodating and retaining the bodily exudates such as urine or excrement has been this area Known to people.The example of these products includes disposable diaper 1, training pants and adult incontinence product.Generally, disposable diaper Liquid permeable top flat including the body towards wearer, towards the impermeable egative film of the liquid of the clothes of wearer and The absorbent cores being placed between liquid permeable top flat and egative film.

After they are introduced into market, related comfortableness, stickiness and the feature of disposable diaper are persistently obtained To improvement.

The significant components of disposable absorbent article are absorbent cores/absorbing structure.Absorbent cores/structure generally comprises superabsorbent pinching Compound material, such as hydrogel formation polymeric material, also referred to as absorbent gelling material be AGM or super-absorbent polymer i.e. SAP.The super-absorbent polymer materials ensure its during use substantial amounts of body fluid such as urine can be inhaled by the absorbent article Receive and locked, thus low bleed back and good dry skin be provided.

Traditionally, super-absorbent polymer materials are incorporated into in the paper pulp i.e. absorbent core structures of cellulose fibre.So And, in these years, people, which have made, significantly to make great efforts so that thinner absorbent core structures are made, and these absorbent core structures are remained able to Gather and store the body fluid largely discharged, especially urine.It has therefore been proposed that being reduced from absorbent core structures or removing these Cellulose fibre.

In some cases, in order to keep the mechanical stabilities of absorbent core structures, it can for example add a small amount of thermoplasticity and glue Mixture material, such as fibrous thermoplastic's adhesive material, so as to stabilize absorbent polymeric material.As a result, there is provided tool There are required permeability/porosity, a gel blockage of reduction, and form in use or transmission the absorbing structure of rock-steady structure.

But, it was found that some absorbent core structures of the cellulose fiber content with reduction, while not loading body fluid It is very thin before, but there can be increased rigidity when partly loading or at full capacity, especially including absorbent article Most of absorptive capacity those regions in, such as in the proparea and crotch region of diaper.Increased rigidity be it is worthless, because For the ability of its body for conforming to wearer that absorbent article is reduced when wearing.Therefore, there is still a need for following absorption Product, they have increased pliability during use in the whole of product, and preferably patch is specifically delivered in a moistened state Conjunction property (while there is equivalent absorption and performance is accommodated).

The present inventor is it has surprisingly been found that by providing without superabsorbent polymer particles or without superabsorbent pinching The specific permanent channels of compound material, obtain improved liquid transmission, and so as to be obtained on whole absorbing structure Collection faster and more effectively liquid-absorbent；Even if less absorbing material can be used, also result in surprisingly Improved performance.By fixed absorbing material or passage (being fixed by using adhesive), passage is more permanent, and The reserve channel during use of absorbing structure, for example when to absorbing structure apply rub when, or when absorbing structure it is wetted thus When absorbing material expands.In addition, the present inventors have additionally discovered that, for example, by the proparea of absorbent cores/structure, and/or absorbing Such passage is provided in the crotch region of core/structure there is provided with increased flexible diaper, while it is entirely using process In surprisingly keep its performance.

The content of the invention

The invention provides a kind of absorbing structure 13 for absorbent article such as diaper 1, it includes the He of support sheet 16 The absorbed layer 17 being supported on；The absorbed layer 17 includes absorbing material 50, and the absorbing material includes at least superabsorbent pinching (it substantially can only include the superabsorbent material, and therefore not include cellulose for compound material and optionally cellulosic material Material)；The absorbing structure 13 and absorbed layer 17 have longitudinal size and average length and lateral dimension and mean breadth, And height；The absorbed layer 17 has longitudinal axis and perpendicular axis of pitch；And the absorbed layer 17 has The sidepiece 20 of first longitudinal direction extension on the side of the longitudinal axis and second on the opposite side of the longitudinal axis are indulged To the sidepiece 20 of extension；And the absorbing structure 13 and its absorbed layer 17 there is proparea, back zone and positioned at them it Between crotch region, each of which is arranged in sequence on the longitudinal size；

Wherein described absorbed layer 17 generally longitudinally extends with least first be present in first sidepiece 20 Passage 26 and the second passage 26 generally longitudinally extended being present in second sidepiece 20, the passage 26 is substantially Without the super-absorbent polymer materials, or for example without any absorbing material 50, and extend through the absorbed layer 17 The height；And wherein described absorbing structure 13 includes one or more adhesive materials 40；60 with least in part by institute Absorbed layer 17 is stated fixed in the support sheet 16.

Absorbed layer 17 has lateral dimension and mean breadth W, longitudinal size and average length L；And generally, each passage 26 are respectively provided with mean breadth W ', its be at least the 4% of W and be the absorbed layer 17 mean breadth W at most 25%；And Each passage 26 is respectively provided with such as average length L ', it is the 80% of the 5% to L of L；Or for example, W ' be W at least 7%, and At most the 20% of preferably W, or at most 15%；And/or W ' is at least 5mm and at most such as 20mm.

In order to avoid to sidepiece seepage, the passage 26 be not extend to the absorbed layer 17 any vertical side of the edge 18 or Horizontal leading edge 19 or back edge 19.For example, in order to improve stickiness and provide liquid transfer capability, the passage 26 is present in In the crotch region, and for example exist in proparea, and be optionally present in the back zone.

In certain embodiments, passage 26 not with longitudinal axes coincident.In certain embodiments, described two passages 26 it Between minimal transverse distance be W at least 5%, preferably at least 10%W.

In this paper some preferred embodiments, one or more adhesive materials include first adhesive material 40, once the absorbed layer 17 is present in the support sheet 16, the first adhesive material is just applied to the layer Or one part, preferably described first adhesive material is thermoplastic fiber binder's material.

Alternatively or additionally, in this paper some preferred embodiments, the one or more Adhesive material includes the second adhesive material 60 being present between the support sheet 16 and the absorbed layer 17, preferably Before the absorbed layer 17 or its absorbing material 50 are deposited in the support sheet 16, second adhesive material is applied to The support sheet 16 or one part.

For example, one or more adhesives 40；60 present at least in the passage 26, and wherein described support Sheet material 16 is folded into the passage 26 or their part, and wherein described support sheet 16 is attached to the absorbing material 50, the absorbing material forms the generally longitudinally wall of the passage 26 or a part for the wall.

The present invention also relates to a kind of absorbent cores 7, it includes absorbing structure 13 as described herein, and this is the first absorbing structure 13；And the other material existed including the neighbouring absorbed layer 17, the other material is selected from：I) other support chip Material 16 and/or ii) capturing material layer 70；Iii) the second absorbing structure 13；13 ', it includes the second support sheet 16 ' and second and inhaled Layer 17 ' is received, wherein second absorbed layer 17 ' and the absorbed layer 17 of first structure 13 are interposed in the branch of first structure Between blade material 16 and second support sheet 16 ', optionally described second absorbing structure 13 is according in preceding claims Described in any one.

Therefore, the second absorbing structure 13 or the absorbing structure 13 without passage 26 are (such as such as institute of Fig. 2 B, 9,10 and 11 Show), or it can be absorbing structure 13 of the invention；Therefore the passage 26 of second absorbing structure 13 can for example substantially It is identical and substantially completely overlapped with them with the passage 26 of first absorbing structure 13.

In this paper some embodiments, the support sheet 16 of first structure and/or second support sheet 16；16’ The passage 26 or their part are folded into, and one or more adhesive materials are present at least at the passage 26 or their part in, and wherein described support sheet 16；16 ' is viscous by the one or more in the passage 26 Mixture material is attached to each other.

Can to absorbing structure support sheet, or to other material, or to the other support chip of the second absorbing structure Material 16 ', or combinations thereof apply pressure；The pressure can be for example applied selectively to the branch corresponding to the passage 26 On the part of blade material 16 ' 16 ', so that the support sheet 16 is folded into the passage 26 by (further), and optionally have Help the support sheet 16 being bonded to the wall or the support sheet of the other material/second of passage in the passage 26 16’。

The present invention also relates to a kind of absorbent article such as diaper 1, it is included according to any one of preceding claims Absorbing structure 13 or absorbent cores 7.

Present invention additionally comprises herein below：

A kind of absorbing structure (13) for absorbent article of embodiment 1., including support sheet (16) and be supported on Absorbed layer (17)；The absorbed layer (17) includes absorbing material (50), and the absorbing material includes at least super-absorbent polymer Material and optionally cellulosic material；The absorbing structure (13) and absorbed layer (17) have longitudinal size and average length, with And lateral dimension and mean breadth and height；The absorbed layer (17) has longitudinal axis and perpendicular axis of pitch； And the absorbed layer (17) has the sidepiece (20) of the first longitudinal direction extension on the side of the longitudinal axis and described The sidepiece (20) of second longitudinal direction extension on the opposite side of longitudinal axis；And the absorbing structure (13) and its absorbed layer (17) there is proparea, back zone and the crotch region between proparea and back zone, each of which is arranged in sequence in the longitudinal ruler On very little；

Wherein described absorbed layer (17) generally longitudinally extends with least first be present in first sidepiece Passage 26 and the second passage generally longitudinally extended (26) being present in second sidepiece, the passage (26) are basic The upper height for being free of the super-absorbent polymer materials and extending through the absorbed layer (17)；And it is wherein described to inhale Receiving structure (13) includes one or more adhesive materials (40；60) with least in part by the absorbed layer (17) fixed to institute State in support sheet (16).

Absorbing structure (13) of the embodiment 2. according to embodiment 1, wherein the absorbed layer (17) has laterally Size and mean breadth W, longitudinal size and average length L；And each passage (26) has mean breadth W ', the average width Degree is at least the 4% of W and is at most the 25% of the mean breadth W of the absorbed layer (17)；And each passage (26) has Average length L ', the average length is the 80% of the 5% to L of L.

Absorbing structure (13) of the embodiment 3. according to embodiment 2, wherein the W ' is at least the 7% of W, and At most the 20% of preferably W, or at most 15%；And/or W ' is at least 5mm and at most such as 20mm.

Absorbing structure (13) of the embodiment 4. according to embodiment 2 or 3, wherein between described two passages (26) Minimal transverse distance D be W at least 5%, preferably at least 10%W.

Absorbing structure (13) of the embodiment 5. according to any one of aforementioned embodiments, wherein described a kind of or many Planting adhesive material includes first adhesive material (40), once the absorbed layer (17) is present in the support sheet (16) On, the first adhesive material is just applied to the layer or one part, and preferably described first adhesive material is heat Plasitc fibers adhesive material.

Absorbing structure (13) of the embodiment 6. according to any one of aforementioned embodiments, wherein described a kind of or many Plant the second adhesive material that adhesive material includes being present between the support sheet (16) and the absorbed layer (17) (60), it is preferable that before the absorbed layer (17) or its absorbing material (50) are deposited in the support sheet (16), second Adhesive material is applied to the support sheet (16) or one part.

Absorbing structure (13) of the embodiment 7. according to any one of aforementioned embodiments, wherein described a kind of or many Plant adhesive (40；60) present at least in the passage (26), and wherein described support sheet (16) be folded into it is described logical Road (26) or their part, and wherein described support sheet (16) is attached to the absorbing material (50), it is described to absorb Material forms the generally longitudinally wall of the passage (26) or a part for the wall.

Absorbing structure (13) of the embodiment 8. according to any one of aforementioned embodiments, wherein the absorbing material (50) substantially it is made up of the super-absorbent polymer materials, the super-absorbent polymer materials are the form of particle.

A kind of absorbent cores (7) of embodiment 9., including the absorbing structure according to any one of aforementioned embodiments (13), it is first absorbing structure (13)；And the other material existed including the neighbouring absorbed layer (17), it is described Other material is selected from：I) other support sheet (16 '), ii) capturing material layer (70)；Iii) the second absorbing structure (13 '), Including the second support sheet (16 ') and the second absorbed layer (17 '), wherein second absorbed layer (17 ') and the first structure The absorbed layer (17) be interposed in the first structure the support sheet (16) and second support sheet (16 ') it Between, optionally described second absorbing structure (13 ') is the absorbing structure according to any one of aforementioned embodiments.

Absorbent cores (7) of the embodiment 10. according to embodiment 9, wherein exist adjacent to the absorbed layer (17) The other material is capturing material layer (70), and the capturing material layer (70) preferably comprises the cellulose fiber of chemical crosslinking Dimension；The capturing material layer is supported in the second support sheet (16 '), the absorbed layer (17) and capturing material layer (70) It is interposed between the support sheet (16) of the first structure and second support sheet (16 ').

Absorbent cores (7) of the embodiment 11. according to embodiment 10, wherein capturing material layer (70) includes leading to Road (26 '), passage (26) of the passage substantially with first absorbing structure (13) is completely overlapped, preferably wherein described First support sheet and the second support sheet are bonded by the passage.

Absorbent cores (7) of the embodiment 12. according to embodiment 9, wherein second absorbing structure (13 ') is root According to the absorbing structure any one of embodiment 1 to 8, and the institute of optionally wherein described second absorbing structure (13 ') State passage (26 ') identical and substantially complete with them substantially with the passage (26) of first absorbing structure (13) Full weight is folded.

Absorbent cores (7) of the embodiment 13. according to embodiment 9 or 12, wherein the branch of the first structure Blade material (16) and/or second support sheet (16 ') are folded into first absorbing structure (13) and/or optionally institute State the second structure (13 ') or the passage (26 and/or 26 ') of capturing material layer (70) or one of the passage (26,26 ') Point, if the passage (26 and/or 26 ') is present, and one or more adhesive materials are present at least at institute State in passage (26,26 ') or their part, and wherein described support sheet (16；16 ') in the passage (26,26 ') In be attached to each other by one or more adhesive materials.

Absorbing structure (13) or absorbent cores (7) of the embodiment 14. according to any one of aforementioned embodiments, wherein The passage is kept at least in part under the drying regime and the wetting state, specifically wherein each passage tool At least the 20% of with good grounds " wet channel integrity test " as described herein, or 30%, or 40%, or 50%, or 60, or 70%, or 80%, or 90% integrality percentage.

A kind of absorbent article of embodiment 15., including the absorbing structure according to any one of aforementioned embodiments (13) or absorbent cores (7), specifically wherein described absorbent article is diaper (1).

Brief description of the drawings

Fig. 1 shows the plan of the diaper 1 of the present invention.

Fig. 2A shows the perspective view of the absorbing structure 13 of the present invention.

Fig. 2 B show the perspective view of alternative absorbed layer 17 for this paper.

Fig. 2 C show the perspective view for the absorbing structure 13 that can be combined with the absorbing structure 13 of the present invention.

Fig. 3 A show the perspective view of alternative absorbed layer 17 of the present invention.

Fig. 3 B show the perspective view of alternative absorbing structure 13 of the present invention.

Fig. 4 A show the perspective view of alternative absorbed layer 17 for this paper.

Fig. 4 B show the perspective view of alternative absorbed layer 17 of the present invention.

Fig. 5 shows the sectional view of the absorbent cores 7 of the present invention.

Fig. 6 shows the sectional view of alternative absorbent cores 7 of the present invention.

Fig. 7 shows the sectional view of alternative absorbent cores 7 of the present invention.

Fig. 8 shows the sectional view of alternative absorbent cores 7 of the present invention.

Fig. 9 shows the sectional view of alternative absorbent cores 7 of the present invention.

Figure 10 shows the sectional view of alternative absorbent cores 7 of the present invention.

Figure 11 shows the sectional view of alternative absorbent cores 7 of the present invention.

Figure 12 shows the sectional view of alternative absorbent cores 7 of the present invention.

Figure 13 shows the sectional view of alternative absorbent cores 7 of the present invention.

Figure 14 shows the method/equipment for the absorbent cores 7 to form the present invention, and the absorbent cores include two suctions of the invention Receive structure.

Embodiment

Definition

" absorbent article " refers to absorb and accommodates the device of body exudates, and more specifically refers to the body with wearer Body is close to or is placed adjacent to absorb and accommodate the device of the various effluents discharged by body.Absorbent article may include adult and Baby' diaper 1, including trousers such as toddler training pants and adult incontinence undergarments and feminine hygiene products such as sanitary napkin and health shield Pad and adult incontinence pads and chest pad, nursing pad, bib, wound dressing product etc..Absorbent article may also include floor-cleaning Product, food industry product etc..As used herein, term " body fluid " or " body exudates " include but is not limited to urine, blood, Vaginal fluid, milk, sweat and excrement.

As used herein, " diaper 1 " refers to that be intended to the placed for being close to wearer discharges to absorb and accommodate from body Various effluents device.Diaper 1 is general to be worn by baby and incontinent persons around lower body, so as to around the waist of wearer And leg.The example of diaper 1 includes baby or adult diaper 1 and such as training pants of pants-type diaper 1.As used herein, term " training pants " refer to the disposable garment with waist opening and leg opening for baby or adult wearers' design.By inciting somebody to action The leg of wearer stretches into leg opening and lifts trousers and arrives around the appropriate location of wearer's lower body, can be by trousers through user's body On appropriate location.Any suitable method can be used to carry out preform for trousers, and methods described includes but is not limited to utilize repeatable button The bonding (for example, suture, welding, adhesive, cohesive adhesive, fastener etc.) of tight and/or not reproducible fastening is by each of product Part links together.Can be to trousers preform (for example, side fastening, front waist fastened) from anywhere in along product circumference.

Describe to be not generally intended to using " disposable " herein washed or be in other words not intended to and be resumed or again (i.e. they are dropped the product used after a single use, and can be recovered recycling, compost treatment or compatible with environment Mode handle).

As used herein, " absorbing structure 13 " refers to the three-dimensional structure for absorbing and accommodating liquid such as urine.Absorb Structure 13 can be the absorbing structure 13 of absorbent article or can be absorbent article absorbent cores 7 only a part, i.e. absorbent cores 7 suction Component is received, as will be further described herein.

As used herein, " super-absorbent polymer materials " refer to substantially water-insoluble polymeric material；Such as use " from Heart reserve capacity " is tested (Edana 441.2-01) and measured, and the material can absorb at least 10 times (and typically at least 15 Times or at least 20 times) 0.9% saline solution in the softened water of its own weight.

As used herein, " non-woven material " refers to the web of the fiber of orientation or arbitrary orientation, not including paper wood and The woven product of binder yarn or long filament, knitting product, cluster are mixed into the product of product, stitchbonded product or wet grinding felting no matter Whether it is needled in addition.Non-woven material and its preparation technology are known to people in the art.In general, prepare non-woven The technique of material, which is included on molded surface, lays fiber, it include spin processes, meltblown, carded, airlaid, wet method into Net, coform and combinations thereof.These fibers may originate from natural fiber or staple fibre, and can for staple fiber or Continuous filament yarn can be formed in situ.

Absorbing structure 13

This paper absorbing structure 13 includes support sheet 16, and the support sheet has the absorbed layer 17 of absorbing material 50. Absorbing material 50 includes at least super-absorbent polymer materials and optionally cellulosic material, and for example such as cellulose paper pulp or changes Property cellulose.

Absorbing structure 13 also includes one or more adhesive materials being discussed further below.Absorbed layer 17 is three-dimensional , and including the first generally longitudinally generally longitudinally passage 26 of passage 26 and second, these passages are substantially free of described Super-absorbent polymer materials.Other materials may be present in the passage 26, as described further below, such as described one kind Or a variety of adhesive materials 40；60.

Absorbing structure 13 and absorbed layer 17 each have longitudinal size and an average length L, such as in the vertical of the structure or layer Extend on to size；And lateral dimension and mean breadth W, such as extend on the lateral dimension of the structure or layer.Absorb knot Structure 13 and absorbed layer 17 each have proparea (in use towards the front portion of user), back zone (in use towards user Rear portion) and positioned at the crotch region between them, each of which extends the full transverse width of the structure/layer, and each has The 1/3 of the average length of the structure/layer.

Absorbing structure 13 and absorbed layer 17 each have central longitudinal axis X, in the central longitudinal axis X Heart axis of pitch Y；The absorbed layer 17 and the absorbing structure 13 each have to be extended on the longitudinal size of the structure or layer A pair of relative vertical side of the edge transverse edge 19 relative with a pair, such as in use towards before user (wearer) The preceding transverse edge in portion and the rear transverse edge in use towards user rear portion.Absorbing structure 13 or absorbed layer 17 it is vertical Central longitudinal axis and/or central transverse, or one or many can be respectively parallel to lateral edges 18 and/or transverse edge 19 It is individual for curve, and narrower lateral dimension is for example provided in crotch region.Generally, vertical side of the edge is on longitudinal X-axis line Mirror image each other.

The longitudinal X-axis line in the center of absorbed layer 17 limits first and second longitudinal sidepieces 20 of absorbed layer 17 respectively, they Referred herein as longitudinal sidepiece 20.Therefore each in longitudinal sidepiece is present in the proparea, crotch region and back zone, and And therefore there is the proparea of first longitudinal direction part and the proparea of second longitudinal direction part etc..In this paper some embodiments, absorb The longitudinal component of layer 17 mirror image each other on the X-axis line of this layer.

Absorbed layer 17 includes at least first passage 26 and second channel 26, and these passages are substantially free of (such as without) institute Superabsorbent polymer particles are stated, the passage 26 extends through the thickness (height) of absorbed layer 17.(it should be appreciated that once in a while may be used There can be a small amount of insignificant superabsorbent polymer particles to be present in passage, but this does not help general function).When absorbed layer 17 Comprising cellulose material or during cellulose, in certain embodiments it may be preferred that first and second passage 26 not yet Containing such cellulose family/cellulosic material.

First passage 26 is present in the first longitudinal direction sidepiece of absorbed layer 17, and second channel 26 is present in absorption In the second longitudinal direction sidepiece of layer 17.

First and second passages 26 each generally longitudinally extend, this often means that each passage 26 is on longitudinal size Than extending on lateral dimension more, and elongation generally on longitudinal size is the elongation on lateral dimension At least twice.

Therefore, this include completely longitudinal direction and the longitudinal direction parallel to the absorbed layer 17 (i.e. parallel to the longitudinal axis) Passage 26；And this includes being the passage 26 bent, and precondition is that radius of curvature is generally at least equal to the flat of absorbed layer Equal lateral dimension (and preferably at least 1.5 or at least 2.0 times average transverse)；And this include it is straight but with it is parallel In longitudinal axis line at most 30 ° of (such as 5 °), or such as at most 20 °, or at most 10 ° of angle passage 26.This also may be used The angled passage of tool is included therein, precondition is the angle ranging from least between two parts of passage 120 °, preferably at least 150 °；And in the case of in such cases any, precondition is that the longitudinal extending amount of passage is big In the amount of extending laterally.

In certain embodiments, completely or substantially interconnection, or not can be not present at least described crotch region There is such passage.

Each in first and second passage 26 can have mean breadth W ', and the mean breadth absorbs to be described At least the 4% of the mean breadth W of layer 17, or at least 7% that such as W ' is W；And/or at most the 25% of for example, W or W is at most 15%；And/or for example, at least 5mm；And such as at most 25mm, or such as at most 15mm.

Each in first and second passage 26 can have average length L ', it may be, for example, the absorbed layer 17 Average length L at most 80%；If passage 26 is only located in proparea, or is only located in crotch region, or is only located in back zone, then L ' be such as L at most 25%, or L at most 20%, and/or L ' be such as L at least 5%, or L at least 10%；And/or L ' is for example, at least 10mm, or at least 20mm；If passage 26 extends in the crotch region and proparea and optionally back zone, L ' be such as L at most 80%, or L at most 70%, and/or L ' be such as L at least 40%, or L at least 50%.If Difference between diversity channels row is by projecting measured length to longitudinal axis in longitudinal axis, then the length L ' of passage.

Passage 26 generally can be so-called " permanent " passage 26.It is so-called permanent to refer in drying regime and wetting state Under, including during friction is applied to them by wearer, the integrality of passage 26 is kept at least in part.It is following " wet logical Whether it is permanent and to what degree that road integrity test " can be used for TCH test channel after wetting saturation.

Permanent channels 26 can be obtained by providing one or more adhesive materials, and described adhesive material is inhaled described Receive material 50, and/or the passage 26, for example or the absorbed layer 17 be fixed in the passage 26 or their part, And/or the support sheet 16 is fixed in the passage 26 or their part.The absorbent cores 7 of the present invention may include tool Body ground permanent channels, the passage pass through bond the first support sheet 16 and the second support sheet (16 ') via these passages and Formed, as shown in such as Fig. 7 and Figure 13 exemplarily.Generally, glue can be used both support sheets is bonded via passage, But it is also possible to be bonded via other known method such as ultrasonic bonding or hot adhesion.Can be along passage continuously Cohesive or intermittently bonded supporting layer.

In fact, present inventors have observed that such passage provides fast liquid acquisition, which reduce risk of leakage.Forever Passage helps prevent absorbed layer and saturation (such saturation increase risk of leakage) occurs in fluid drainage area.In addition, the present inventor It was also surprisingly found that being contrasted with desired situation, although reducing the super-absorbent polymerization in absorbing structure The total amount (by providing the passage without such material) of thing material, but improve the fluid handling of absorbing structure or diaper Energy.Permanent channels also have following further advantage：In a moistened state, absorbing material can not be moved thus be retained in in-core Its desired location, therefore more preferable stickiness and fluid absorbency are provided.

For example, relative to the similar core with same amount of AGM and glue but without passage, according to as shown in Figure 4 A The WAIIT tests made of the core with two absorbed layers for including permanent channels, the present inventor compared under wetting state AGM wastes.

Simply, the amount of the on-fixed absorbing particles material in the core under the WAIIT measurements determinations wetting situation. In the test, absorbent cores are soaked to 73% capacity, and cut in the horizontal in the middle, and make it from predetermined height Spend and fall and measure spillage of material.More information on the test is found in the A1 of US 2008/0312622.

Result be the present invention core have 87% AGM " wet fixation " (standard deviation=5%), this with without passage 65% " wet fixation " (standard deviation=5%) of contrast core be contrasted.In this example, will by using adhesive Described two support sheets are bonded in the channel and passage is turned into permanent, and the bonding is bonded using two layers of thermoplastic fiber Agent (Fuller 1151 is applied twice with 5gsm) and one layer of hot-melt adhesive (Fuller 1358, with 5gsm administrations).

Wet channel integrity test

The test is designed to check the integrality of passage after wetting saturation.Can be directly to absorbing structure or to bag The absorbent cores for including the absorbing structure are tested.

1. the length (in terms of millimeter) of Measurement channel (if passage is not straight, is measured through logical in the dry state Length of curve in the middle part of road).

2. and then absorbing structure or core are immersed in the synthetic urine solution " salt that 5 liters of concentration are 9.00g NaCl/1000ml solution In the aqueous solution ", the saline solution is prepared by the way that appropriate sodium chloride is dissolved in distilled water.The temperature of the solution It is necessary for 20+/- 5 DEG C.

3. after being submerged 1 minute in the saline solution, take out absorbing structure or core and catch its one end vertically to keep 5 Second is then open and flat on a horizontal surface by its to drain solution, makes towards garment side downwards (if the side is recognizable).Such as Fruit absorbing structure or core include stretching element, then will absorb absorbing structure or core and be tensed in X and Y sizes so that not observing Shrink.The ends/edges edge of absorbing structure or core is fixed to the horizontal surface so that ungauged regions can occur.

4. the rigid plate of absorbing structure or core Suitable weight is covered, the plate has following size：Length, which is equal to, inhales The development length of structure or core is received, and width is equal to the absorption maximum structure or core width in transverse direction.

5. 18.0kPa pressure is applied on above-mentioned rigid plate region and continues 30 seconds.Covered based on rigid plate The gross area calculates pressure.Pressure is obtained by placing additional weight in the geometric center of rigid plate so that rigid plate and attached Plus the combined wt of counterweight causes 18.0kPa pressure on the gross area of rigid plate.

6. after the 30 seconds, remove additional weight and rigid plate.

7. immediately after, measurement keeps the cumulative length of each several part of undamaged passage (in terms of millimeter；If passage is not It is straight, then measures the length of curve through channel middle).If the part without passage keeps undamaged, passage is not It is permanent.

8. calculate the integrality percentage of permanent channels in the following way：The each several part of undamaged passage will be kept Cumulative length divided by passage in drying regime length, gained business is then multiplied by 100.

Advantageously, according to the test, according to the permanent channels of the present invention with least 20%, or 30%, or 40%, or 50%, or 60, or 70%, or 80%, or 90% integrality percentage.

As shown in such as Fig. 5 and 9, one or more adhesive materials 60 may be present in the support sheet 16 and the suction Receive and (be for example herein referred to as " second adhesive material ") between layer 17 or some of part.For example, adhesive material is applied Use the part for the support sheet 16 for being intended to overlap with passage 26 so that in the passage, support sheet can use institute Adhesives are stated to the wall or one part of passage or other material is bonded to, it is as described herein；And/or can be by adhesive The part for the support sheet 16 for being intended to overlap with absorbing material 50 is administered to, so as to fix the material and avoid it from largely migrating Into the passage；Adhesive can be administered on the substantially whole surface region of support sheet 16, for example essentially continuously And/or homogeneous apply.It can be the hot-melt adhesive for example by printing, dip coating or spraying are applied.

Additionally or alternatively, absorbing structure 13, which may also include, is administered to via the support sheet (herein referred to as " first glues one or more adhesive materials 40 on the absorbed layer 17 or one part of 16 supports Mixture material "), for example combine/be deposited on the support sheet in the support sheet 16 with shape in the absorbing material 50 Into after absorbed layer 17.It may be, for example, thermoplastic fiber binder, as described below.In certain embodiments, it can be connected Be administered to continuously on absorbed layer 17, thus be administered on absorbing material 50 and passage 26 in so that fixed absorbed layer and optionally Support sheet is also attached in the passage by ground, as described above.Shown in this such as Fig. 5 to 11.

It should be appreciated that the first and second adhesive materials can be the adhesive of same type, such as Thermoplastic hot melt Melt adhesive, for example as described below, difference between first and second is therefore that its position for being administered.

In certain embodiments, one or more adhesive materials are present at least in passage 26, for example, at least institute First adhesive material is stated, or both first and second adhesive material.Therefore it can be present in the longitudinal direction of passage 26 On wall (height and its length of extension absorbed layer 17).If the folding of material of support sheet 16 is into the passage 26 or their one Part, such as support sheet 16 have undulation portion in the passage 26 or their part, then the undulation portion can be fixed To the wall or one part, so that it is guaranteed that passage 26 is kept (keeps at least in part) during use.This such as Figure 10 Shown in 11.

First and second passages 26 can be on the structure of absorbed layer 17/ central longitudinal axis (X-axis line) mirror image each other.

In certain embodiments, and as shown in such as accompanying drawing, in the absence of the longitudinal axis with the absorbed layer 17 The passage 26 of coincidence.Passage 26 can be spaced apart from each other on their whole longitudinal size.Minimum separation distances D may be, for example, layer Average transverse W at least 5%, or such as W at least 10%, or W at least 15%；Or for example can be for for example, at least 5mm, or for example, at least 8mm.

In addition, in order to reduce fluid risk of leakage, longitudinal main channel 26 is generally not extend to any transverse direction of absorbed layer 17 Edge 19 and/or longitudinal edge 18, also as shown in such as accompanying drawing.Generally, the minimum between passage 26 and nearest longitudinal edge Apart from I equivalent to W at least 5%, or at least 10% for example equivalent to W.In certain embodiments, the distance is for example, at least 10mm；Minimum range F between passage and the nearest transverse edge 19 of absorbed layer 17 may be, for example, the average length L of this layer At least 5%.

Absorbing structure may include only two passages, such as only in proparea, such as shown in Fig. 2 B, or for example at center In (crotch) area, and optionally extend into proparea and/or back zone, it is all as shown in Figure 2 A.

Absorbing structure 13 may include more than two such passage 26, for example, at least 4, or at least five or at least six. Some or all of these can be substantially parallel to each other, for example, be straight and complete longitudinal, and/or two or more Or all can on longitudinal axis mirror image each other, or two or more can be bending or angled and for example vertical Mirror image, and two or more can be bending by different way or straight each other on to axis, and for example in longitudinal axis Mirror image each other on line.This is for example shown in Fig. 3 A and 3B.

For example, the proparea of absorbed layer 17 may include two or more passages 26, they are generally in the longitudinal axis of this layer On mirror image each other；And crotch region may include two or more passages 26, their mirrors each other generally on the longitudinal axis of this layer Picture, such as shown in Fig. 4 A, and the latter may optionally extend into proparea and/or back zone, with any applicable size and Above-mentioned other characteristics.Optionally, passage in addition may be present in back zone, such as two, such as shown in Fig. 4 B.

First and second passages 26 and optionally other passage 26 can be positioned in the absorbed layer 17 so that exist Center longitudinally oriented strip, the center longitudinally oriented strip and the longitudinal axes coincident without any passage 26；The absorbing material 50 is excellent Choosing is essentially continuously present in the bar.For example, the bar can have minimum widith D, the minimum widith be W at least 5%, or W at least 10%, and/or for example, at least 5mm, or at least 10mm or at least 15mm, and/or even up to 40mm.

In certain embodiments, in the center longitudinally oriented strip between two adjacency channels 26, absorbing material 50 Average basis weight or the average basis weights of the super-absorbent polymer materials be at least 350, and such as at most 1000g/m², or example Such as 450g/m², and such as at most 750g/m²。

In some preferred embodiments, neighbouring each first and second passage, and optionally adjacent to described other Passage, the absorbing material 50 is essentially continuously present.

Absorbing structure 13 generally includes one or more other materials (such as other material layer) to cover absorbed layer 17, they are herein referred to as other material；Suspect in order to avoid any, this layer not being made up of adhesive material, so And the other material can be to include the layer of adhesive, such as the absorbed layer 17 in the absorbing structure 13 for being intended to contact this paper On surface.Therefore, the other material can be wrapped on the surface that the absorbed layer 17 for being intended to neighbouring absorbing structure 13 is placed Include adhesive material.

Resulting structures are herein referred to as " absorbent cores 7 ".Its example is shown in Fig. 5 to 13.

The other material can be other absorbing structure 13 ', and it has the second absorbed layer 17 ' and the second support sheet 16 ' so that the two absorbed layers 17,17 ' are interposed in the support sheet 16；Between 16 '；This can be the other suction of the present invention Structure 13 ' is received, it has two or more passages 26 ', shown in as described herein and such as Fig. 5,6,7,8；Or this can be As described herein but channel-less absorbing structure, such as shown in Fig. 9；And/or it can be as described herein but adhesive-free Absorbing structure.

Second absorbing structure 13 ' can be identical with the first absorbing structure 13, or both of which can be with the logical of the present invention Road 26；26 ' absorbing structure, but they can be different, such as with different passages, different number of passage (such as Fig. 8 Shown in), different adhesives, different adhesive apply or combinations thereof.

The passage 26 of first absorbing structure 13 or some and the passage 26 ' of the second absorbing structure 13 ' in those or that Some in a little can coincide with one another with it is overlapping；For example only partially overlap completely or for example and only partially overlapping；Or passage 26； Some or all of 26 ' even can not coincide with one another and not overlap with.In certain embodiments, their about phases each other Together, and a structure passage 26 substantially completely overlap and another overlapping structure passage 26.Institute in this such as Figure 12 Show.

In certain embodiments, the other material can be a part for support sheet 16, and the part is folded to On absorbed layer 17 and then peripherally edge seal is cut, so as to encapsulate absorbed layer 17.

In certain embodiments, the other material is other support sheet 16 ', i.e., absorbing structure 13 is by other Support sheet 16 ' is covered, and the absorbed layer is then interposed between described two support sheets.

In certain embodiments, the other material can be capturing material layer 70 and/or collection sheet material 12, for example, seal To the support sheet 16.In certain embodiments, the other material includes other absorbing structure, such as those described above Any of, or other support sheet 16 ', and then being combined with capturing material layer 70, and optionally other adopt Collect sheet material 12.This is for example shown in Figure 11.

The other material is alternatively the capturing material layer 70 that the neighbouring absorbed layer 17 is present, and capturing material layer 70 is excellent Choosing includes the cellulose fibre of chemical crosslinking, and capturing material layer is supported in the second support sheet 16 '.The He of absorbed layer 17 Capturing material layer 70 can be then interposed between the support sheet 16 of first structure and second support sheet 16 ', such as It is exemplary shown in Figure 12.Capturing material layer 70 can also comprise additionally in passage 26 ', these passages specifically substantially completely with institute The passage 26 for stating the first absorbing structure 13 is overlapping, as shown in figure 13.

Second support sheet 16 ' of support sheet 16 and/or the capturing material layer 70 of first structure can be folded into the first suction Receive the passage 26 of structure 13 and/or be optionally folded into the passage 26 ' or these passages 26 of capturing material 70 (if present) of layer, A 26 ' part.One or more adhesive materials can present at least in passage 26,26 ' or their part, and And support sheet 16；16 ' can be attached to each other by the one or more in these adhesive materials in the passage 26,26 '. Another second adhesive 60 ' may be present between the second support sheet 16 ' and capturing material layer 70.Except thermoplastic adhesives Beyond 40, another adhesive (not shown) can be placed between capturing material layer 70 and absorbed layer 17, so as to preferably improve The adhesiveness of the two layers.

In the case of in such cases any, the other material then can along its periphery edge seal to support Sheet material 16, so as to encapsulate absorbed layer 17；Optionally 17 '.

In the case of in such cases any, support sheet 16 or acquisition layer/sheet material can be folded into and (risen and fallen into) The passage 26 or their part.Shown in this such as Fig. 6,7,8.

It can be attached to the support sheet 16 of the absorbing structure 13 of the present invention in the passage 26, such as by adhesive material Material attachment, it is as described herein.Alternatively or additionally, its be also attached to passage 26 and/or 26 ' wall or Their part.

In certain embodiments, absorbing structure 13 includes the other material of such overlapping absorbed layer 17, and will Press member be applied selectively in those parts overlapped with the passage 26 and/or 26 ' the support sheet 16 and/ Or be applied to the other material so that by the support sheet 16 and/or the other material and the passage 26 and/ Or 26 ' overlap to the passage of absorbing structure 13 and/or be pressurized to other (second) (if present) of absorbing structure 13 ' In passage (therefore：It is pressurized in the (if present) of passage 26 and/or 26 '), so as to help to prepare the undulation portion and/or help The other material and the support sheet 16 are attached to each other in the passage 26 and/or 26 ', if adhesive material If material exists as described herein.

The press member can be the pressure roll with bossing, and the bossing has substantially described passage 26 And/or 26 ' size, shape, pattern, the size, shape, pattern can be overlapped (i.e.：Coordinate) support sheet 16 it is described Part or the other material overlapped with the passage 26 and/or 26 '.

In certain embodiments, described other (such as second) support sheet 16 ' can be wider than absorbing structure to cause the Two support sheets 16 ' can be folded into passage 26 and/or 26 ' or their part, and so as to be preferably attached to first Blade material 16.Shown in this such as Fig. 6,7 and 8.

Absorbent cores 7 include two (or more) absorbing structures 13 wherein；13 ' (they include passage as described herein 26；26 ') in embodiment, one or two in the passage 26 of an absorbing structure 13, or more, or all can be basic On be superimposed upon on the passage 26 ' of neighbouring absorbing structure 13 '.Thus gained absorbent cores 7 are absorbing structure 13 '；13 ' with passage (26； 26 ') layered product, wherein passage 26；Absorbed layer 17 is extended through in 26 ' sheets；17 ' thickness.This is for example shown in Figure 12.

Additionally or alternatively, one or two of absorbing structure 13, or more, or all Passage 26 can not be superimposed upon on the passage 26 ' of neighbouring absorbing structure 13 '；They can be for example with proximity structure passage 26 it is complementary. So-called complementation refers to the extension of the passage 26 of the first absorbing structure 13 of formation of passage 26 ' of the second absorbing structure 13 '.

In certain embodiments, absorbent cores 7 may include two or more absorbing structures 13, and one of those is the present invention Structure, and one be the absorbing structure 13 with support sheet 16 ', the support sheet thereon have without passage and/ Or the absorbed layer 17 ' of adhesive-free (there are super-absorbent polymer materials).

If the second absorbing structure 13 ' is present in absorbent cores 7, the mode that it can be as described above and for above-mentioned original Because including one or more adhesives.

For example, it may be present so that it is overlapped with the passage 26 of at least the first absorbing structure 13, and/or with its passage 26 ' (if present) is overlapped.

Absorbing material 50

Absorbed layer 17 includes absorbing material 50, and the absorbing material includes super-absorbent polymer materials (such as particle), institute State material optionally with cellulosic material (including such as cellulose, in fibers form crushing wood pulp) combine.It is above-mentioned in addition Material (such as other i.e. the second absorbing structure 13 ' may include absorbing material, and illustrate to be also applicable to it below.

In certain embodiments, absorbing material 50 may include at least 60%, or at least 70 weight % super-absorbent polymer Material and at most 40% or most 30% cellulosic material.

In some other embodiments, absorbed layer 17 includes absorbing material 50, and the absorbing material is substantially poly- by absorbing Compound material such as particle is constituted, for example, there is the cellulosic material less than 5 weight % (absorbing material 50)；And it is described The absorbing structure 13 of absorbed layer 17/ can be free of cellulosic material.

Generally, super-absorbent polymer materials are the form of particle.Suitable for may include from superabsorbent material for absorbed layer 17 Any superabsorbent polymer particles for being recognized of document, be for example described in Modern Superabsorbent Polymer Technology, F.L.Buchholz, A.T.Graham, Wiley 1998.Absorbent polymer particles can be ball Shape, such as similar spherical or irregular shape particle, the particle of wienerwurst shape, or generally pass through reverse phase suspension It polymerize the particle of that ellipsoidal shape obtained.The particle optionally at least can also focus on to be formed to a certain extent Bigger irregular particle.

In this paper some embodiments, overall absorption material 50 and/or the granular super-absorbent polymer materials have At least high-adsorption-capacity, such as Centrifuge Retention Capacity with for example, at least 20g/g, or 30g/g.The upper limit can be for for example at most 150g/g, or at most 100g/g.

In this paper some embodiments, absorbing material 50 includes or is made up of superabsorbent polymer particles, described Grain formed by acrylic acid polymer/polyacrylate polymers, such as with 60% to 90%, or about 75% degree of neutralization, With such as sodium counter ion counterionsl gegenions.

Super-absorbent polymer can be internal and/or surface-crosslinked polyacrylate and acrylic acid polymer.Suitably Material be described in PCT Patent Application WO 07/047598 or such as WO 07/046052 or such as WO2009/155265 and In WO2009/155264.In certain embodiments, suitable superabsorbent polymer particles can be by the life of the present art Production. art is obtained, and is such as more particularly described in WO 2006/083584.Super-absorbent polymer is preferably internal crosslinking, i.e., It is polymerize in the presence of the compound with two or more polymerizable groups, the compound can be free-radical polymerized Into polymer network.Useful crosslinking agent includes the (methacrylic acid of ethylene glycol two for example as described in EP-A 530 438 Ester), diethylene glycol diacrylate, allyl methacrylate, trimethylolpropane trimethacrylate, triallylamine, tetraene Propoxyethane；As EP-A 547 847, EP-A 559 476, EP-A 632 068, WO 93/21237, WO 03/104299, Diacrylate and triacrylate described in WO 03/104300, WO 03/104301 and DE-A 103 31 450；Such as (it not only includes acrylate-based the acrylate of mixing described in DE-A 103 31 456 and DE-A 103 55 401 Group, in addition to ethylenic unsaturated group)；Or such as such as DE-A195 43 368, DE-A 196 46 484, WO 90/15830 With the crosslinker mixture described in WO 02/32962；And the crosslinking agent described in WO2009/155265.Super-absorbert gathers What polymer beads can be crosslinked for outer surface, or：Post-crosslinking).Useful rear crosslinking agents include containing two or more energy Enough carboxylate groups with the polymer form the compound of the group of covalent bond.Useful compound is included for example such as EP-A 083 022, described in EP-A 543 303 and EP-A 937 736 polyglycidyl compounds, polyaziridine, polyamine, Polyamidoamines amine, diglycidyl or poly epihydric alcohol based compound；Polyalcohol as described in DE-C 33 14 019；Such as Cyclic carbonate described in DE-A 40 20780；2- as described in DE-A 198 07 502Oxazolidone and its derivative (such as N- (2- hydroxyethyls) -2-Oxazolidone)；Two-as described in DE-A 198 07 992 and poly- 2-Oxazolidone； 2- oxo tetrahydrochysenes -1,3- as described in DE-A 198 54 573Piperazine and its derivative；Such as institute in DE-A 198 54 574 N- acyl groups-the 2- statedOxazolidone；Ring urea as described in DE-A 102 04937；As described in DE-A 103 34 584 The amide acetals of two rings；Oxetanes and ring urea as described in EP-A 1 199 327；And as in WO 03/031482 Described morpholine -2,3- diketone and its derivative.

Super-absorbent polymer or their particle can have surface to be modified feature, such as coating or be partially coated with Coating agent.The example of the absorbent polymer particles of coating is disclosed in WO2009/155265.Coating agent can be following coating Agent, it causes absorbent polymer particles more hydrophilic.For example, it can be for hydrophily (i.e.>, pyrolysis) and silica, it is all Such as silica gel.Coating agent can be polymer, such as elastomeric polymer or film forming polymer or elastic film forming polymer, and it is at described Elastomer (elasticity) membrane coat is formed on grain.The coating can be homogeneous and/or equal on the surface of absorbent polymer particles Even coating.Coating agent can be applied by 0.1% to 5% content.

Superabsorbent polymer particles can have the granularity in 45 μm to 4000 μ ms, more specifically, size distribution At 45 μm to about 2000 μm, or about 100 μm to about 1000 or in the range of 850 μm.The size distribution of the material of particle form It can as known in the art determine, for example, pass through dry screen analytic approach (" the Particle Size of EDANA 420.02 Distribution) determine.

In this paper some embodiments, superabsorbent material is the form of particle, and the particle has at most 2mm, or is situated between In 50 microns between 2mm or to 1mm, or preferably 100 or 200 or 300 or 400 or 500 μm, or to 1000 or to 800 or extremely 700 μm of median granularity of quality；The median granularity of quality for example can come for example, by the method described in EP-A-0691133 Measurement.In some embodiments of the invention, super-absorbent polymer materials are at least 80 weights in the form of particle, the particle It is with the size between 50 μm and 1200 μm and with the quality between any of the above described range combinations to measure % It is worth the particle of granularity.In addition, or in another embodiment of the present invention, the particle is generally spherical.In the present invention Another or additional embodiment in, super-absorbent polymer materials have the granularity of relative close limit, such as wherein most (example Such as at least 80% or preferably at least 90% or even at least 95 weight %) particle have between 50 μm and 1000 μm, it is excellent Selected introductions are between 100 μm and 800 μm, and the granularity being more preferably between 200 μm and 600 μm.

Support sheet 16；16’

This paper absorbing structure 13 includes support sheet 16, and the absorbing material 50 supports and is fixed on the support sheet On.The other material can be or including support sheet 16 ', and explanation is also applied for this sheet material 16 ' below.

The support sheet 16 can be single sheet material or web material, and the web material is subsequently divided into each absorption Structure 13, specifically paper wood, film, woven fabric or supatex fabric or layered product any in these.

In this paper some embodiments, support sheet 16 is supatex fabric, and such as non-woven webs are such as combed Supatex fabric, spunbonded non-woven fabrics or meltblown nonwoven fabric, and including nonwoven laminate any in these.

These fibers can have a natural or artificial source, and can be staple fiber or continuous filament yarn or be in situ The fiber of formation.Commercially available fiber has the diameter generally in the range of less than about 0.001mm to greater than about 0.2mm, And they are rendered as several different form：Chopped fiber (being referred to as staple fibre or chopped strand), continuous single fiber are (long Silk or monofilament), non-twist continuous long strand (tow) and twisting continuous long strand (yarn).The fiber can be bicomponent fibre, For example with piece-core arrangement, such as with the different polymer for forming described and the core.Supatex fabric can be by being permitted Multi-method such as meltblown, spun-bond process, solution-polymerized SBR, electrostatic spinning and carded are formed.The base weight of supatex fabric is usual Represented with gram/m (gsm).

This paper non-woven material can be made up of hydrophilic fibre；" hydrophily " describes the surface of fiber or fiber, it Can be deposited on these fibers aqueous fluid (such as aqueous body fluids) wetting.Hydrophily and wettability are generally according to stream Body is for example defined by the contact angle and moisture-inhibiting time of supatex fabric.By Robert F.Gould edit it is entitled " Contact angle, wettability and adhesion " American Chemical Society publications This is had been discussed in detail in (1964 all rights reserved).When the contact angle between fluid and fiber or fiber surface is less than 90 ° When, or when fluid tend on the fiber surface it is spontaneous spread out when (two kinds of situations generally coexist), just say fiber or fiber surface Soaked (i.e. hydrophilic) by fluid.If on the contrary, contact angle be more than 90 ° and fluid can not on whole fiber surface spontaneous paving Exhibition, then fiber or fiber surface are considered as hydrophobic.

This paper support sheet 16 can be ventilative.Thus be accordingly used in this paper film may include micropore.This paper non-woven material Material can be for example ventilative.Support sheet 16 can have such as 40 or 50 to 300 or to 200m³/(m²× min) air penetrability, institute State air penetrability and pass through EDANA method 140-1-99 (125Pa, 38.3cm²) determine.Alternatively, support sheet 16 There can be a lower air penetrability, for example, non-breathable, so as to for example preferably be trapped on the surface of the movement including vacuum.

In a preferred embodiment, support sheet 16 for such as SMS or SMMS types nonwoven laminate material, non- Weave laminate web.

In order to be readily formed the undulation portion, support sheet 16, which can have, is less than 60gsm, or is, for example, less than 50gsm, example If 5gsm is to 40gsm, or to 30gsm base weight.

Support sheet 16 can have CD ductility or MD ductility.

In this paper one embodiment, support sheet 16 has a undulation portion, and the undulation portion folds (fluctuating) into described In first and second passages 26, and optionally it is folded into the other passage or their part.For example these rise and fall Portion can extend on the about full longitudinal size of passage；They can for example extend to the complete average height of the passage of absorbed layer 17/, or For example only its at most 75%, or the passage of absorbed layer 17/ average height at most 50%.This helps the described of neighbouring each layer Passage 26 and the passage 26 fix absorbing material 50.

It is described logical that undulation portion can use for example described second adhesive material of one or more adhesive materials to be attached to The wall in road 26.Alternatively or additionally, support sheet 16 can be for example viscous with described first and/or second Mixture is attached to the other material such as the second support sheet 16 described above in the passage 26.

Adhesive material

Absorbing structure 13 may include one or more adhesive materials.In certain embodiments, its as described above and more than Stating mode includes first adhesive material and/or second adhesive material.

This paper absorbent cores may include another second absorbing structure 13 ', and it may include one or more adhesive materials； Explanation is equally applicable to them below.

Any suitable adhesive can be used in the purpose, such as using so-called hot-melt adhesive.For example, can spray The production number HL-1620-B of the hot-melt adhesive of painting, such as H.B.Fuller Co. (St.Paul, MN).

Adhesive material can not only help absorbing material being fixed in support sheet, and it also can be in disposable product Storage during and/or assist in keeping the integrality of the passage in absorbing structure absorbent cores during use.Adhesive material can The absorbing material for helping prevent significant quantity is moved in passage.In addition, when adhesive material is administered in the channel or is administered When on the support sheet part overlapped with passage, its can so as to help the support sheet by absorbing structure to be attached to the wall, And/or other material is attached to, as further described below.

In certain embodiments, first adhesive 40 and/or second adhesive 60 can be thermoplastic adhesive materials.

In certain embodiments, it is fiber that can apply first adhesive 40, and absorbing material is fixed in the fiber formation Fibrous network in support sheet.Thermoplastic binder fiber can be contacted partly with the support sheet of absorbing structure；Such as Fruit is also applied in the channel, then absorbed layer is anchored to support sheet by its (further).

Thermoplastic adhesive materials can for example allow it is such be swelled, it is described without interrupting and assigning excessive compression stress Compression stress will suppress being swelled for absorbent polymer particles.Thermoplastic adhesive materials 40 suitable for the present invention；60 include Hot-melt adhesive, it include at least with plasticizer and other thermoplasticity diluent such as tackifying resin and additive such as antioxygens The thermoplastic polymer of agent combination.Exemplary suitable hot-melt adhesive material 40；60 are described in the A2 of EP 1447067 In.In certain embodiments, there is thermoplastic polymer the molecular weight (Mw) more than 10,000 and the vitrifying less than room temperature to turn Temperature (Tg) or -6 DEG C>Tg<16℃.In certain embodiments, the concentration of the polymer of heat fusing is in about 20 to about 40 weights In the range of amount %.In certain embodiments, thermoplastic polymer can be insensitive for water.Exemplary polymer is to include A-B- (styrene) block copolymer of A three blocks structure, the block structures of A-B two and (A-B) n radial block copolymer structures, wherein A Block is the non-elastomer polymer block for generally comprising polystyrene, and B block is unsaturated conjugated diene or (part) Such variant of hydrogenation.B block is usually isoprene, butadiene, ethylene/butylene (hydrogenated butadiene), ethylene/propene (hydrogen Change isoprene) and their mixture.

Adoptable other suitable thermoplastic polymers are metallocene-polyolefin, and they are to utilize unit point or metallocene The ethene polymers of catalyst preparation.Wherein, at least one comonomer can prepare copolymer, ternary polymerization with vinyl polymerization The polymer of thing or higher level.Equally applicable is amorphous polyolefin or amorphous poly-alpha-olefines (APAO), and they are C2-C8 Homopolymer, copolymer or the terpolymer of alhpa olefin.

Thermoplastic adhesive materials (being usually hot-melt adhesive material) typically exist in the form of fibers, i.e. heat fusing Adhesive can be fiberized.In certain embodiments, thermoplastic adhesive materials form fibre in absorbent polymer particles Tie up network.Generally, the fiber can have about 1 μm to about 100 μm, or about 25 μm to about 75 μm of average thickness and about 5mm are extremely About 50cm average length.Specifically, hot-melt adhesive material layer can be provided that into such as including network structure.In some realities Apply in example, thermoplastic adhesive materials are applied with following amount, the amount is to 30g/m per support sheet 160.5², or 1 to 15g/m², or 1 and 10g/m²Or even 1.5 and 5g/m²。

One canonical parameter of the adhesive suitable for the present invention can be to be less than value 1 at 60 DEG C, or less than the damage of value 0.5 Consume angle tan δ.Loss angle tan δ at 60 DEG C are associated with the characteristics of liquids of the adhesive under high environment temperature.Tan δ are lower, glue Mixture shows more like solid rather than liquid, i.e. it flows or the trend of movement is smaller, and adhesive as described herein is super Structure goes bad with the time or the trend of even avalanche is smaller.Therefore, if absorbent article is used for hot weather, the value is special It is unimportant.

It can be favourable due to for example processing reason and/or performance reason, and the thermoplastic adhesive materials are at 175 DEG C It is lower to have between 800 and 4000mPas, or 1000mPas or 1200mPas or 1600mPas to 3200mPa S or to 3000mPas or to 2800mPas or to 2500mPas viscosity (when being measured by ASTM D3236-88, Using spindle 27,20pmp, preheat 20 minutes at said temperatures, and stir 10min).

Thermoplastic adhesive materials can have between 60 DEG C and 150 DEG C, or between 75 DEG C and 135 DEG C, or be situated between Between 90 DEG C and 130 DEG C, or the softening point between 100 DEG C and 115 DEG C, the softening point can use ASTM E28-99 (Herzog methods；Use glycerine) determine.

In this paper one embodiment, thermoplastic adhesive component can be to be hydrophilic, with less than 90 °, or is less than 80 ° or the contact angle less than 75 ° or less than 70 °, the contact angle can use ASTM D 5725-99 measurements.

Absorbent article such as diaper

This paper absorbing structure 13 or absorbent cores 7 can be used for absorbent article, all such as above-mentioned absorbent articles, and specifically using In diaper 1, including for baby or the diaper 1 fastened and (refastenable) training pants used of being grown up；Or for absorbing Pad, such as sanitary napkin or adult incontinence undergarments' pad.

In addition to absorbing structure 13 as described herein or absorbent cores 7, the product may also include top flat and egative film and Such as one or more flanks or hoop.Top flat or hoop or flank may include skin care compositions known in the art or emulsion or powder End, piece, including U.S.5,607,760；U.S.5,609,587；U.S.5,635,191；That described in U.S.5,643,588 A bit.

Preferred product includes top flat in use towards wearer, such as nonwoven sheet, and/or perforate herein Piece, including apertured formed films as known in the art；And egative film.

Egative film can be impermeable for liquid, as known in the art.In a preferred embodiment, liquid is impermeable The egative film crossed includes thermoplastic film thin plastic for example with about 0.01mm to about 0.05mm thickness.Suitable stock footage leads to Often include allowing steam to escape the gas permeable material for still preventing effluent from passing through egative film simultaneously from diaper 1.Suitable sheet films bag Include by Tredegar Industries Inc., Terre Haute, IN manufactures and with trade name X15306, X10962 and Those of X10964 sales.

Egative film or its any part can flexibly extend in one or more directions.Can be by known in the art any Any other element that egative film is attached or engaged to top flat, absorbing structure/core or diaper 1 by attachment component.

This paper diaper may include leg cuff and/or barrier hoop；Thus product generally has a pair relative flanks and/or leg Hoop and/or barrier hoop, each pair are positioned adjacent to a vertical side of the edge of absorbing structure/core, and along the structure/core Longitudinal extending, and the mirror image each other generally on the longitudinal axis of product；Bound round if there is leg cuff and barrier, then each leg cuff is led to Often it is positioned in the outside of barrier hoop.These hoop can along at least 70% length product Longitudinal extending.The hoop can have freely Longitudinal edge, the edge can be positioned on the X-Y plane (longitudinal direction/laterally) of product outside, i.e., in a z-direction.Paired flank Or hoop can on the longitudinal axis of product mirror image each other.These hoops may include elastomeric material.

This paper diaper may include waistband, or such as front waist belt and back waist band, and they may include elastomeric material.

Diaper 1 may include lateral plate or so-called auricle.Diaper 1 may include the buckling clamping part for fastening front and rear, Such as front waist belt and back waist band.It is preferred that fastening system include fastening inserted sheet and touch-down zone, wherein the attachment of fastening inserted sheet or engaging To the back zone of diaper 1, and touch-down zone is the part in the proparea of diaper 1.

Absorbing structure 13 can be with acquisition layer 12 and/or capturing material layer 70 or their system in combination, and absorbent cores 7 Or diaper 1 may include acquisition layer 12 and/or capturing material layer 70 or their system, it can include the cellulose of chemical crosslinking Fiber.The cellulose fibre of such crosslinking can have desired absorption characteristic.The cellulose fibre of Exemplary chemical crosslinking is public Open in United States Patent (USP) 5,137,537.In certain embodiments, the cellulose fibre of chemical crosslinking with based on glucose monomer C between about 0.5 mole of % and about 10.0 mole of %₂-C₉Poly- carboxylic cross-linking agents, or between about 1.5 moles of % peace treaties C between 6.0 moles of %₂-C₉Poly- carboxylic cross-linking agents.Citric acid is a kind of Exemplary cross linking agents.In other embodiments, may be used Use polyacrylic acid.In addition, according to some embodiments, the cellulose fibre of crosslinking has about 25 to about 60, or about 28 to about 50, Or the water retention value of about 30 to about 45.It is disclosed in for determining the method for water retention value in United States Patent (USP) 5,137,537.According to some realities Apply example, the cellulose fibre of crosslinking can be fold, twisting or curling or combinations thereof (including rise fold, It is twisting and curling).

In certain embodiments, one or both of upper acquisition layer and lower acquisition layer can include non-woven material, institute It can be hydrophilic to state material.In addition, according to some embodiment, one or both of upper acquisition layer and lower acquisition layer can also be wrapped Cellulose fibre containing chemical crosslinking, the fiber can form or can not be formed a part for non-woven material.Shown according to one Example property embodiment, upper acquisition layer can be comprising non-woven material (cellulose fibre without crosslinking), and lower acquisition layer can Cellulose fibre comprising chemical crosslinking.In addition, according to one embodiment, lower acquisition layer can be included and other fibers such as day The cellulose fibre for the chemical crosslinking that right or synthetic polymeric fibers are mixed.It is such other natural according to exemplary embodiment Or synthetic polymeric fibers may include that high surface area fiber, thermoplastic bonding fibers, polyethylene fibre, polypropylene fibre, PET are fine Dimension, staple fibre, lyocell fiber and their mixture.For the suitable non-of upper acquisition layer and lower acquisition layer Weaving material includes but is not limited to SMS materials, and it includes spunbond layer, meltblown layer and another spunbond layer.In certain embodiments, The non-woven material (the in particular non-woven material with durable hydrophilic coatings) of permanent hydrophilic is desired.It is other suitable Embodiment include MMS structures.In certain embodiments, non-woven material is porous.

Diaper 1 may include the sublevel being arranged between top flat and the absorbent cores 7 of absorbing structure 13/, and the sublevel can absorb And distribute and/or fixed body exudates.Suitable sublevel includes acquisition layer as known in the art, surge layer and/or excrement Accumulation layer.Can be used as the suitable material of sublevel may include the open foam of atmospheric air chamber, macropore high pressure loft nonwoven material, The perforate of large-size particles shape form and closed-cell foam (macropore and/or micropore), high loft nonwoven material, polyolefin, polyphenyl The structure of ethene, polyurethane foam or particle including the fibre bundle of a large amount of vertical orientated preferred ring-type or preferably as closed above In the apertured formed films described in genital coversheet.(as used herein, term " micropore " is referred to by capillarity Transmit fluid but with the material of the average pore size more than 50 microns.Term " macropore " refers to such material：The material The Kong Tai great that has and fluid can not be transmitted by capillarity, the material is generally with greater than about 0.5mm (average) The hole of diameter, more specifically, diameter but typically less than 10mm or even less than 6mm with greater than about 1.0mm (average) are (flat The hole of diameter).

Method for assembling absorbent article or diaper 1 is used to constructing and configuring disposable absorption including known in the art The routine techniques of product.For example, can be by a row of the uniform continuous layer of adhesive, the patterned layer of adhesive or adhesive Independent line, screw thread or round dot, egative film and/or top flat engagement are connected with each other to absorbing structure/core or by them.Have found with business The name of an article has for the adhesive that HL-1258 or H-2031 is produced by H.B.Fuller companies (St.Paul, Minnesota) to make us Satisfied performance.Although top flat, egative film and the core of absorbing structure 13/ can be assembled with a variety of well known configurations, preferred diaper 1 Configuration general description is in following patent：September in 1996 authorizes Roe et al. entitled " Absorbent Article on the 10th With Multiple Zone Structural Elastic-Like Film Web Extensible Waist Feature” United States Patent (USP) 5,554,145；On October 29th, 1996 authorizes Buell et al. entitled " Disposable Pull-On Pant " United States Patent (USP) 5,569,234；Robles et al. entitled " Absorbent is authorized with December 21st, 1999 Article With Multi-Directional Extensible Side Panels " United States Patent (USP) 6,004,306.

The method for preparing absorbing structure 13

This paper absorbing structure 13 can be prepared by any method comprised the following steps：Absorbing material 50 is deposited to In support sheet 16, such as, by the way that support sheet described in first 16 is placed on bossing, the bossing has will The absorbing material 50, is then deposited on by the shape and size of the passage 26 produced；Thus absorbing material 50 is not Remain on the bossing, but be only remained on the remainder of support sheet 16.

In certain embodiments, the absorbing structure 13 with absorbed layer 17 can be for example obtained by the following method, it is described Absorbed layer has two or more passages 26 of substantially absorption-free materiall 50 wherein, the described method comprises the following steps：

A) feeding machine of annular surface for the absorbing material 50 to be fed to the first movement, such as hopper are provided；

B) transfer device is provided, the transfer device is used for the annular surface that support sheet 16 is transferred to the second movement；

C) annular surface of the first movement is provided, it has the one or more formation of absorbed layer 17 reservoirs, the storage Utensil has longitudinal size and average length, perpendicular lateral dimension and mean breadth and the depth vertical with both Size and mean depth and the voidage for accommodating the absorbing material 50 wherein are spent, the reservoir includes one Or multiple raised items generally longitudinally extended, the raised item do not have voidage, for example each have mean breadth W and Average length L, the mean breadth is at least the 4% or at least 5% of the mean breadth of reservoir, and the average length is At least the 5% of the average longitudinal dimension of reservoir and at most 30%；The reservoir is used to the absorbing material 50 being transferred to The annular surface of adjacent and close second movement；

D) surface of the second movement is provided, it, which has, includes the outer of one or more ventilative or partly ventilative storage tank Shell, the storage tank is used to accommodate the support sheet 16 upon which or within which, with housing region and with one or more The setting strip generally longitudinally extended, the setting strip can be air-locked, and each with mean breadth W ', it is described average Width is, for example, at least 2.5mm, and preferably 0.5 × W has average length L to 1.2 × W ', the average length is about 0.8 × L to 1.2 × L；

Wherein described ventilative cage connection is to one or more ancillary vacuum systems, and the vacuum system is used for promotion will branch Blade material 16 and/or the absorbing material 50 are maintained at thereon, and

Wherein in meeting point, it is described first movement annular surface and the shell the absorbing material 50 the transfer phase Between it is located adjacent one another at least in part and be closely adjacent to each other, and cause during the transfer of the absorbing material 50 each setting strip base Completely adjacent to and close to raised item in sheet；

E) absorbing material 50 is fed to the annular surface of first movement with the feeding machine, at least its institute is fed to State in reservoir；

F) optionally, any absorbing material 50 on the raised item is removed；

G) simultaneously, the support sheet 16 is transferred to the annular surface of second movement, the storage tank is transferred to Above or wherein；

H) in the meeting point, optionally only the absorbing material 50 is shifted with the annular surface of the described first movement It is described to be partially located on the housing region of the storage tank or wherein to the part as described below of support sheet 16；And

I) 1) to the step g applied adhesives material of the absorbing structure 13 (i.e. first adhesive material 40)；And/or

I) 2) before step f, or simultaneously, but under any circumstance before step g), to the support The applied adhesives material of sheet material 16 (i.e. second adhesive material 60).

Step i) 1) can relate to the first adhesive material spraying of fibers form to the absorbed layer 17 or one On part, for example, essentially continuously spray, therefore it is existed in the passage 26.

Step i) 2) can relate to dip coating or spraying support sheet 16, continuously be coated with, or for example with corresponding to passage The pattern coating of 26 patterns.

The reservoir can be formed by a large amount of grooves and/or cavity, and they, which have, is used to accommodate the absorption material wherein The voidage of material 50.In certain embodiments, the mean breadth W of (each) bar is preferably at least 6mm, or for example, at least 7mm, And/or at least the 7% of the mean breadth of corresponding reservoir, or for example, at least 10%.

The groove and/or cavity can be each for example with the full-sizes at least 3mm transverse direction, and wherein direct The beeline in substantial lateral size between adjacent cavity and/or groove is less than 5mm.It is directly adjacent to the chamber of raised item Body and/or groove can have the volume more than one or more of their neighboring chambers or groove or whole volumes, institute State neighboring chambers or groove and be not directly adjacent to the bar or another (therefore above further being removed from some).

The reservoir of the annular surface of first movement can be to breathe freely at least in part, and first movement Annular surface, which can have, includes the cylinderical surface of the reservoir, and the cylinderical surface is moved rotatable around stator, The stator includes vacuum chamber；The shell on the surface of second movement can be columnar, and it is moved rotatable around stator Dynamic, the stator includes the auxiliary vacuum chamber for being connected to the ancillary vacuum system.

This method can be intended to production absorbent cores 7 or structure, and it includes above-mentioned absorbing structure 13；Two or more in 13 ' It is individual；Such as two such layers superposed on one another so that the absorbing material 50 of first layer and the absorbing material that another is the second layer 50 is located adjacent one another and be interposed between the support sheet 16 of first layer and the support sheet 16 of the second layer.

This method can relate to provide press member such as pressure roll, its can to applying pressure on absorbing structure 13, and Usually following absorbing structure 13, wherein absorbing material 50 is interposed between the support sheet 16 of other material；The pressure It can be applied on the support sheet 16 or any other material/layer being placed on absorbed layer 17, such as the paragraph above It is described.The pressure, which applies, preferably to be carried out with optionally only to applying pressure on the passage 26 and/or 26 ' of absorbing structure 13, For example it is applied on the following part of support sheet 16, the part corresponds to passage 26, and does not therefore include (in apparent surface On) absorbing material 50, so as to avoid the compacting of itself of absorbing material 50；And/or it is applied to the other material for example On the following part of its support sheet 16 ', the part corresponds to passage 26 ', and does not therefore include inhaling (on opposing surfaces) Material 50 is received, so as to avoid the compacting of itself of absorbing material 50.

Therefore, the press member can have a raised pressure pattern, the pressure pattern correspond to raised item and/or The pattern of the setting strip, the pattern for preferably corresponding to setting strip at some.

Dimension disclosed herein and value are not understood as being strictly limited to cited exact value.On the contrary, unless in addition Indicate, each such dimension is intended to indicate that described value and around the functionally equivalent scope of the value.For example, disclosed amount Guiding principle " 40mm " is intended to indicate that " about 40mm ".

All documents quoted in a specific embodiment are all hereby incorporated herein by relevant portion.It is any The reference of document may not be interpreted as accreditation as the prior art of the present invention to it.When any implication of term in this document , will be to assign in the literature or definition and any implication of same term in the document being incorporated by reference or define is when conflicting The implication of that term or definition are defined.

Although illustrate and describing the present invention with specific embodiment, it is aobvious to those skilled in the art and It is clear to, many other variations and variations can be made without departing from the spirit and scope of the present invention.Therefore, with Attached claims are intended to all these changes and modification in the scope of the invention.

Claims (21)

1. a kind of absorbing structure (13) for absorbent article, including support sheet (16) and the absorbed layer being supported on (17)；The absorbed layer (17) includes absorbing material (50), and the absorbing material includes at least super-absorbent polymer materials；It is described Absorbing structure (13) and absorbed layer (17) have longitudinal size and average length and lateral dimension and mean breadth, Yi Jigao Degree；The absorbed layer (17) has longitudinal axis and perpendicular axis of pitch；And the absorbed layer (17) has in institute State the sidepiece (20) of first longitudinal direction extension on the side of longitudinal axis and second on the opposite side of the longitudinal axis is indulged To the sidepiece (20) of extension；And the absorbing structure (13) and its absorbed layer (17) have proparea, back zone and are located at Crotch region between proparea and back zone, each of which is arranged in sequence on the longitudinal size；

Wherein described absorbed layer (17) has at least first be present in the sidepiece of the first longitudinal direction extension generally longitudinally The passage (26) of extension and the second passage generally longitudinally extended being present in the sidepiece of the second longitudinal direction extension (26), the passage (26) is substantially free of the super-absorbent polymer materials and extends through the institute of the absorbed layer (17) State height；Wherein described support sheet, which has, is folded into the passage and the undulation portion adhered to by ultrasonic bonding；And Wherein described absorbing structure (13) includes one or more adhesive materials (40；60) with least in part by the absorbed layer (17) it is fixed in the support sheet (16)；

Wherein described one or more adhesive materials include first adhesive material (40), the first adhesive material (40) It is applied to the absorbed layer (17) or one part being present in the support sheet (16), the first adhesive material For thermoplastic fiber binder's material；

Wherein described absorbing material (50) is substantially made up of the super-absorbent polymer materials, the super-absorbent polymer materials For the form of particle,

Wherein described absorbed layer (17) has longitudinal size and average length L；And each passage (26) has average length L ', The average length L ' it is at least the 10% of L.

2. absorbing structure (13) according to claim 1, wherein the absorbed layer (17) has lateral dimension and average width Spend W, longitudinal size and average length L；And each passage (26) have mean breadth W ', the mean breadth W ' be W extremely Lack at most the 25% of 4% and the mean breadth W for the absorbed layer (17)；And each passage (26) has average length L ', the average length L ' it is at most the 80% of L.

3. absorbing structure (13) according to claim 2, wherein the W ' is at least the 7% of W；And/or W ' is at least 5mm And at most 20mm.

4. absorbing structure (13) according to claim 3, wherein the W ' is at most the 20% of W.

5. absorbing structure (13) according to claim 3, wherein the W ' is at most the 15% of W.

6. the absorbing structure (13) according to any one of claim 2-5, wherein between described two passages (26) Minimal transverse distance D is at least the 5% of W.

7. absorbing structure (13) according to claim 1, wherein one or more adhesive materials include being present in Second adhesive material (60) between the support sheet (16) and the absorbed layer (17).

8. absorbing structure (13) according to claim 7, wherein heavy in the absorbed layer (17) or its absorbing material (50) Product is arrived before in the support sheet (16), and second adhesive material is applied to the support sheet (16) or one part.

9. absorbing structure (13) according to claim 7, wherein one or more adhesives (40；60) at least exist In the passage (26), and wherein described support sheet (16) is folded into the passage (26) or their part, and And wherein described support sheet (16) is attached to the absorbing material (50), the absorbing material (50) forms the passage (26) Generally longitudinally wall or the wall a part.

10. a kind of absorbent cores (7), including the absorbing structure (13) according to any one of claim 1-9, it is the first suction Receive structure (13)；And the other material existed including the neighbouring absorbed layer (17), the other material is selected from：I) it is another Outer support sheet (16 '), ii) capturing material layer (70)；Iii) the second absorbing structure (13 '), including the second support sheet (16 ') and the second absorbed layer (17 '), wherein the absorbed layer of second absorbed layer (17 ') and first absorbing structure (17) it is interposed between the support sheet (16) of first absorbing structure and second support sheet (16 ').

11. absorbent cores (7) according to claim 10, wherein second absorbing structure (13 ') is according to claim Absorbing structure any one of 1-9.

12. absorbent cores (7) according to claim 10, wherein the other material existed adjacent to the absorbed layer (17) Expect for capturing material layer (70)；The capturing material layer is supported in the second support sheet (16 '), the absorbed layer (17) and institute State the support sheet (16) and second support sheet that capturing material layer (70) is interposed in first absorbing structure Between (16 ').

13. absorbent cores (7) according to claim 12, wherein capturing material layer (70) includes the fiber of chemical crosslinking Cellulose fiber.

14. absorbent cores (7) according to claim 12, wherein capturing material layer (70) includes passage (26 '), it is described Passage (26) of the passage substantially with first absorbing structure (13) is completely overlapped.

15. absorbent cores (7) according to claim 14, wherein the support sheet (16) of first absorbing structure and Second support sheet is bonded by the passage.

16. absorbent cores (7) according to claim 10, wherein second absorbing structure (13 ') is according to claim 1 To the absorbing structure any one of 9.

17. absorbent cores (7) according to claim 10, wherein second absorbing structure (13 ') is according to claim 1 To the absorbing structure any one of 9, and wherein described second absorbing structure (13 ') the passage (26 ') substantially It is identical and substantially completely overlapped with them with the passage (26) of first absorbing structure (13).

18. the absorbent cores (7) according to claim 10 or 16, wherein the support sheet of first absorbing structure (16) and/or second support sheet (16 ') be folded into first absorbing structure (13) the passage (26 and/or 26 ') or the passage (26,26 ') a part, and one or more adhesive materials are present at least at the passage In (26,26 ') or their part, and wherein described support sheet (16；16 ') by institute in the passage (26,26 ') One or more adhesive materials are stated to be attached to each other.

19. the absorbent cores (7) according to claim 10 or 16, wherein the support sheet of first absorbing structure (16) and/or second support sheet (16 ') be folded into it is first absorbing structure (13) and/or it is described second absorb knot The passage (26 and/or 26 ') or a part for the passage (26,26 ') of structure (13 ') or capturing material layer (70), and One or more adhesive materials are present at least in the passage (26,26 ') or their part, and wherein institute State support sheet (16；16 ') it is attached to each other by one or more adhesive materials in the passage (26,26 ').

20. absorbing structure (13) or absorbent cores (7) according to claim 1 or 10, wherein the passage is in drying regime Be kept at least in part under wetting state, wherein each passage have according to " wet channel integrity test " at least 20%, or 30%, or 40%, or 50%, or 60, or 70%, or 80%, or 90% integrality percentage.

21. a kind of absorbent article, including absorbing structure according to any one of the preceding claims (13) or absorbent cores (7), wherein the absorbent article is diaper (1).